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Question

What is an aperture in the lens?


A

The distance between A & B

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B

The distance between C & D

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C

The distance between A & O

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D

The distance between O & B

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Solution

The correct option is A

The distance between A & B


Aperture is basically the size of the lens. Hence, the distance from A to B is the aperture of the lens. We prefer shorter aperture because shorter the aperture, thinner would be the lens for same focal length. Thinner lens behave more ideally than their thicker counterparts.


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